Animation problem

Hey guys ;)

I wanna do simple animations (walk, run, jump).

I think that the script part is correct, but once I saved the script, I have an error:

Assets/Standard Assets/Scripts/Camera Scripts/Movecharacter.js(51,42): BCE0019: 'animation' is not a member of 'Object'.

Here is the script:

 #pragma strict
 
 var speed:float;
 var speedRun:float;
 var speedRotate:float;
 var gravity:float;
 var jumpspeed:float;
 
 private var controller:CharacterController;
 private var moveDirection:Vector3;
 private var deltaTime:float;
 private var characterContent;
 private var runAnim:boolean;
 private var run:boolean;
 
 
 function Start () {
     controller = GetComponent("CharacterController");
     characterContent = transform.Find("samuzai");
 }
 
 function Update () {
     
     deltaTime = Time.deltaTime;
     runAnim = false;
     
     if(controller.isGrounded){
 
         if(Input.GetKey(KeyCode.LeftShift)){
             moveDirection = Vector3(0,0,Input.GetAxis("Vertical") * speedRun);
             runAnim = true;
         }
         else{
             moveDirection = Vector3(0,0,Input.GetAxis("Vertical") * speed);
         }
         
         if(Input.GetKey(KeyCode.UpArrow) || Input.GetKey(KeyCode.DownArrow)){    
             if(!runAnim){
                 characterContent.animation.CrossFade("walk", 0.2);
             }
             else{
                 characterContent.animation.CrossFade("run", 0.2);
             }
         }
         else{
                 characterContent.animation.CrossFade("idle", 0.2);
         }
         if(Input.GetKey(KeyCode.Space)){
         
             moveDirection.y = jumpspeed;
             characterContent.animation.CrossFade("jump", 0.2);
         
         }
     }
         
         
         moveDirection = transform.TransformDirection(moveDirection);
         
         transform.Rotate(Vector3(0,Input.GetAxis("Horizontal") * speedRotate * deltaTime,0));
         
         moveDirection.y -= gravity * deltaTime;
         
         controller.Move(moveDirection * deltaTime);
 }
 

Thanks :)